Adaptive satellite power transmission system for overcoming radio interference in the multi-beam satellite system and communication method

Abstract

Disclosed are a satellite power transmission system and a communication method. The satellite power transmission system includes: a reference value determining unit determining reference values of signal to interference ratios for each beam coverage of a multi-beam satellite network system; an interference amount determining unit determining an interference amount for each beam coverage of the multi-beam satellite network system; a signal power determining unit determining signal power corresponding to each beam coverage based on the reference value determined by the reference value determining unit and the interference amount determined by the interference amount determining unit; and a signal power allocating unit allocating the signal power determined by the signal power determining unit to each beam to communicate with each earth station.

What is claimed is: 
     
         1 . An adaptive satellite power transmission system, comprising:
 a reference value determining unit determining reference values of signal to interference ratios for each beam coverage of a multi-beam satellite network system;   an interference amount determining unit determining an interference amount for each beam coverage of the multi-beam satellite network system;   a signal power determining unit determining signal power corresponding to each beam coverage based on the reference value determined by the reference value determining unit and the interference amount determined by the interference amount determining unit; and   a signal power allocating unit allocating the signal power determined by the signal power determining unit to each beam to communicate with each earth station.   
     
     
         2 . The adaptive satellite power transmission system of  claim 1 , further comprising:
 a service information collecting unit collecting information of services corresponding to each beam coverage of the multi-beam satellite network system,   wherein the reference value determining unit determines reference values of signal to noise ratios required for each service as reference values of signal to interference ratios for each beam coverage based on service information collected by the service information collecting unit.   
     
     
         3 . The adaptive satellite power transmission system of  claim 1 , further comprising:
 an interference information collecting unit collecting the interference information in the same frequency band from each earth station communicating with the multi-beam satellite network system,   wherein the interference amount determining unit determines the interference amount for each beam coverage based on interference information of each earth station collected by the interference information collecting unit.   
     
     
         4 . The adaptive satellite power transmission system of  claim 1 , wherein the signal power allocating unit distributes the signal power for each beam coverage according to a set time when a sum of signals in which signal to interference ratios for each beam coverage of the multi-beam satellite system are the reference values or more are larger than maximum signal power provided by a satellite. 
     
     
         5 . The adaptive satellite power transmission system of  claim 1 , further comprising:
 a earth station inspecting unit inspecting locations of each earth station communicating with the multi-beam satellite network system; and   an interference information updating unit updating information of changed frequency information to the interference amount determining unit in real time when the frequency interference within each beam coverage is changed based on the locations of each earth station inspected by the earth station inspecting unit.   
     
     
         6 . A communication method performed by an adaptive satellite power transmission system, comprising:
 determining reference values of signal to interference ratios for each beam coverage of a multi-beam satellite network system;   determining an interference amount for each beam coverage of the multi-beam satellite network system;   determining signal power corresponding to each beam coverage based on the reference value determined by the determining of the reference value and the interference amount determined by the determining of the interference amount; and   allocating the signal power determined in the determining of the signal power to each beam to communicate with each earth station.   
     
     
         7 . The communication method of  claim 6 , further comprising:
 collecting information of services corresponding to each beam coverage of the multi-beam satellite network system,   wherein the determining of the reference value determines reference values of signal to noise ratios required for each service as reference values of signal to interference ratios for each beam coverage based on service information collected in the collecting of the service information.   
     
     
         8 . The communication method of  claim 6 , further comprising:
 collecting the interference information in the same frequency band from each earth station communicating with the multi-beam satellite network system,   wherein the determining of the interference amount determines the interference amount for each beam coverage based on interference information of each earth station collected in the collecting of the interference information.   
     
     
         9 . The communication method of  claim 6 , wherein in the communicating, the signal power for each beam coverage is distributed according to a set time when a sum of signals in which signal to interference ratios for each beam coverage of the multi-beam satellite system are the reference values or more are larger than maximum signal power provided by a satellite. 
     
     
         10 . The communication method of  claim 6 , further comprising:
 inspecting locations of each earth station communicating with the multi-beam satellite network system; and   updating information of changed frequency information to the interference amount determining unit in real time when the frequency interference within each beam coverage is changed based on the locations of each earth station inspected by the earth station inspecting unit.